[Bug c++/50134] -Wmissing-prototypes doesn't work for C++

[steven at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50134

--- Comment #15 from Steven Bosscher <steven at gcc dot gnu.org> 2012-05-30 
18:52:18 UTC ---
This bug results in real warnings being introduced unnoticed, see:
http://gcc.gnu.org/ml/gcc-patches/2012-05/msg02005.html